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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2013 Volume 97, Issue 6, Pages 415–426 (Mi jetpl3387)

This article is cited in 117 papers

SCIENTIFIC SUMMARIES

Ferromagnetism of zinc oxide nanograined films

B. B. Straumalabc, S. G. Protasovada, A. A. Mazilkinad, G. Schützd, È. Goeringd, B. Baretzkyc, P. B. Straumale

a Institute of Solid State Physics, Russian Academy of Sciences
b National University of Science and Technology «MISIS»
c Institute of Nanotechnology, Karlsruhe Institute of Technology
d Max-Planck-Institut für Metallforschung
e A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Abstract: The reasons for the appearance of ferromagnetic properties of zinc oxide have been reviewed. It has been shown that ferromagnetism appears only in polycrystals at a quite high density of grain boundaries. The critical size of grains is about $20$ nm for pure ZnO and more than $40$ ìm for iron-doped zinc oxide. The solubility of manganese and cobalt in zinc oxide increases significantly with a decrease in the size of grains. The dependences of the saturation magnetization on the concentrations of cobalt, manganese, and ion are nonmonotonic. Even if the size of grains is below the critical value, the ferromagnetic properties of zinc oxide depend significantly on the texture of films and the structure of amorphous intercrystallite layers.

Received: 11.02.2013


 English version:
Journal of Experimental and Theoretical Physics Letters, 2013, 97:6, 367–377

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